CN1254644C - Integral air conditioner - Google Patents

Abstract

The present invention relates to an integrated air conditioner. The integrated air conditioner of the present invention makes it difficult for condensed water to scatter outside. It is equipped with: components containing a compressor, an outdoor heat exchanger, an indoor fan, and an outdoor fan; a dew container for storing condensed water arranged at the lower part of the above indoor heat exchanger; and introducing the water in the above dew container into the above-mentioned The water guide passage at the lower part of the outdoor fan; in the above-mentioned integrated air conditioner, the above-mentioned outdoor fan is arranged on the indoor side of the above-mentioned outdoor heat exchanger, and the diameter of the air suction port in the axial direction of the fan is made smaller than the diameter of the fan , the outdoor fan is made into a fan as above, and a water storage part for storing condensed water from the above-mentioned water guide passage is arranged at the lower part of the fan chamber surrounding the fan, and the air sucked in by the surrounding of the above-mentioned components is sucked by the above-mentioned outdoor fan Exhaust from the above outdoor heat exchanger.

Description

Integrated air conditioner

technical field

The present invention relates to an integrated air conditioner.

Background technique

In the existing integrated air conditioner, the content recorded in the Japanese Patent Application Publication No. 48-109744 (Patent Document 1) has: the moisture contained in the indoor air condensed by the indoor heat exchanger is arranged in the indoor heat exchange The dew container at the lower part of the fan is collected, and the water is introduced into the lower part of the multi-blade fan as an outdoor fan, and the disc ring arranged on the outer periphery of the multi-blade fan is used to suck in air through the outdoor heat exchanger and discharge it to the radial direction. , and discharged to the outside.

However, when the water is directly discharged outdoors by such an integrated air conditioner, there is a problem in that mist-like water is sprayed around the air conditioner.

In addition, in Japanese Patent Laying-Open Publication No. 8-261499 (Patent Document 2), the disclosed structure is: a propeller fan is arranged inside the outdoor heat exchanger, and air is sucked in from the side of the outdoor unit and blown to the outdoor heat exchanger. and vent the air to the outside.

In addition, what is described in the official publication No. 53-157550 (patent document 3) is: an integrated air conditioner in which the air inlet is arranged on both sides of the air inlet, and the air inlet is located on the front side of the indoor side. central.

In addition, in Japanese Patent Laying-Open No. 8-261499 (Patent Document 2), the disclosed structure is: a propeller fan is arranged inside the outdoor heat exchanger, and outdoor air is sucked in from the side of the outdoor unit and blown to the outdoor heat. On the heat exchanger, through the outdoor heat exchanger, and exhaust the inhaled outdoor air to the outside.

In addition, what is described in Japanese Patent Application Publication No. 53-157550 (Patent Document 3) is: an integrated air conditioner in which the air outlet is arranged on both sides of the air inlet, and the air inlet is located on the front side of the room. the central.

In Patent Document 2, although there is no description about the treatment of condensed water, the condensed water is introduced into the lower part of the propeller fan by using this structure, and the water is blown to as While evaporating water on the outdoor heat exchanger of the condenser, the efficiency of the outdoor heat exchanger can be improved.

However, for this propeller fan, when the water surface of the condensed water touches the blades of the fan as much as possible, the water will be picked up when the blades touch the water, and the air suction port of the outdoor component will fly out of the component against the airflow. .

In addition, in the integrated air conditioner described in the above-mentioned Patent Document 3, since the height dimension of the indoor air discharge port is basically the same as the height dimension of the assembly, for example, when the vertical blade and the horizontal blade of the indoor air discharge port are driven by a motor, there is The problem is that the motor cannot be installed without gaps between the bottom or top of the discharge port and the bottom or top plate of the component. That is, there is a problem that there is no space for disposing either of the lower part or the upper part of the air discharge port.

Furthermore, in a common integrated air conditioner, although the electrical box with the operation panel is arranged below the air outlet, in this structure, there is a problem that the height dimension of the air outlet will be higher, and the air outlet will be higher. In the case where any other component is to be arranged on its lower or upper part, there is no space for that arrangement.

Contents of the invention

An object of the present invention is to provide an integrated air conditioner that prevents water from splashing outside.

Another object of the present invention is to provide an integrated air conditioner that ensures a degree of freedom in the height dimension of an indoor air discharge port.

The above object is achieved in the following manner. The integrated air conditioner of the present invention is provided with: components containing a compressor, an outdoor heat exchanger, an indoor fan, and an outdoor fan; A dew container for storing condensed water; and a water guide passage leading the water in the dew container to the lower part of the outdoor fan; it is characterized in that: the outdoor fan is arranged on the indoor side of the outdoor heat exchanger, and the axial direction of the fan is The diameter of the air suction port is made smaller than the diameter of the fan, and the outdoor fan is made into the above-mentioned fan, and a water storage part for storing condensed water from the above-mentioned water guide passage is arranged at the lower part of the fan chamber surrounding the fan. , the air sucked in from the surroundings of the above-mentioned components is discharged from the above-mentioned outdoor heat exchanger through the above-mentioned outdoor fan.

In addition, the above-mentioned other object is achieved by the following method. The integrated air conditioner of the present invention is equipped with: a component containing a compressor, an outdoor heat exchanger, an indoor fan, and an outdoor fan; The lower part, a dew container for storing condensed water; and a water guide passage for introducing the water in the above-mentioned dew container into the lower part of the above-mentioned outdoor fan; it is characterized in that: the indoor side of the above-mentioned outdoor heat exchanger is equipped with the above-mentioned outdoor fan, The diameter of the air inlet in the axial direction of the fan is made smaller than the diameter of the fan, and the outdoor fan is made into the above-mentioned fan, and the lower part of the fan room surrounding the fan is set to store the condensed water from the above-mentioned water guide passage. The water storage part of the above-mentioned outdoor fan discharges the air sucked in from the surroundings of the above-mentioned components from the above-mentioned outdoor heat exchanger, and an electrical box with an operating part is arranged at the lower part of the above-mentioned dew container.

Description of drawings

Fig. 1 is an external view of an embodiment of an integrated air conditioner according to the present invention.

Fig. 2 is a bottom view of the appearance of the integrated air conditioner assembly of this embodiment.

Fig. 3 is a plan view of the integrated air conditioner of this embodiment.

Fig. 4 is a sectional view of main parts of the integrated air conditioner of this embodiment.

Fig. 5 is an external view of the outdoor fan.

Fig. 6 is a sectional view of the outdoor fan.

Fig. 7 is a schematic diagram illustrating the flow of wind in an outdoor blower unit.

Fig. 8 is a schematic diagram illustrating an outdoor fan and a bezel.

Fig. 9 is a schematic diagram illustrating treatment of falling water droplets by an outdoor fan.

Fig. 10 is a schematic diagram illustrating the flow of wind using a propeller fan.

Fig. 11 is a schematic diagram illustrating treatment of falling water droplets by means of a propeller fan.

Fig. 12 is a schematic diagram illustrating treatment of falling water droplets by a multi-blade blower.

Figure 13 is the exterior view of the multi-blade fan

Fig. 14 is an external view of the indoor fan.

Fig. 15 is a front view of the indoor side with the decorative cover removed.

Fig. 16 is a front view of the indoor side of the prior art example with the decorative cover removed.

Fig. 17 is the air volume-static pressure characteristic curve of the centrifugal fan.

FIG. 18 is a schematic diagram illustrating an electric component storage unit.

Fig. 19 is a perspective view of a centrifugal blower.

Fig. 20 is a sectional view showing the structure of the centrifugal blower.

Fig. 21 is a sectional view showing the structure of the centrifugal blower.

Fig. 22 is a front sectional view of the centrifugal blower.

Fig. 23 is a sectional view showing the structure of the centrifugal blower.

Fig. 24 is a front sectional view of the centrifugal blower.

Fig. 25 is a sectional view showing the structure of the centrifugal blower.

Fig. 26 is a front sectional view of the centrifugal blower.

Fig. 27 is a sectional view showing the structure of the centrifugal blower.

Fig. 28 is a front sectional view of the centrifugal blower.

Detailed ways

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

Fig. 1 is an external view of an embodiment of the integrated air conditioner of the present invention. Fig. 2 is a bottom view of the appearance of the components of the integrated air conditioner of this embodiment. Fig. 3 is a plan view of the integrated air conditioner of this embodiment. Fig. 4 is a sectional view of main parts of the integrated air conditioner of this embodiment.

In Fig. 1 and Fig. 2, the symbols represent respectively: 1 is an integrated air conditioner, 2 is a component, 3 is a decorative cover, 4 is a box body, 5 is a base equipped with parts constituting the component, 9 10 is an air outlet, 11 is an electrical component (electrical parts box) with an operating portion, 12 is an upper outdoor air inlet, and 13 is a side outdoor air inlet. In addition, in FIGS. 3 and 4 , 6 denotes a partition, 7 denotes the outdoor side partitioned by the partition 6 , and 8 denotes the indoor side partitioned by the partition 6 .

Moreover, these figures also show that: 14 is a compressor, 15 is an outdoor heat exchanger, 16 is an indoor heat exchanger, 17 is a motor for a fan, 18 is an outdoor fan installed on the outdoor side of the motor for a fan, 19 is the indoor fan installed on the indoor side of the fan motor, 20 is the cover of the indoor fan 19, 21 is a dew container that receives the condensed water condensed by the indoor heat exchanger 16, 22 is a water guide, and 23 is arranged on The water storage part of outdoor blower fan bottom, 24 is fan room, and 25 is chamber, and 26 is the mouth ring of fan room 24, and 27 is the mouth ring that represents indoor side.

These main components that constitute the integrated air conditioner 1 are mounted on the base 5 to form an assembly 2, and the assembly 2 is installed in the outer case 4, and a decorative cover plate 3 is installed in the front to form the integrated air conditioner 1.

As described above, the integrated air conditioner 1 divides the interior of the integrated air conditioner 1 into the outdoor side 7 and the indoor side 8 by the partition plate 6 provided at the central part of the base 5, and the indoor side 8 is arranged An indoor heat exchanger 16 is provided, and a dew container 21 is provided below the indoor heat exchanger 16 . Further, at the rear of the indoor heat exchanger 16, the rotating shaft of the fan motor 17 disposed on the outdoor side 7 protrudes into the indoor side 8 through the partition plate 6, and an indoor fan 19 is attached to the end thereof. An orifice 27 is provided between the indoor heat exchanger 16 and the indoor fan 19 , through which the indoor air sucked by the indoor fan 19 is sucked by the indoor fan 19 .

On the other hand, at the outdoor side 7, the rotating shaft on the outdoor side provided on the opposite side to the indoor side rotating shaft of the front blower motor 17 protrudes inside the chamber 25, and at its front end An outdoor fan 18 is installed. And, by driving the fan motor 17 to drive the outdoor fan 18, the outdoor air is sucked into the inside of the integrated air conditioner 1 through the upper air inlet 12 and the side air inlet 13 of the outer case 4, and is arranged on the outdoor side 7. The compressor 14 and the blower motor 17 at the place are cooled. Then, the outdoor air which has cooled the compressor 14 and the fan motor 17 is sucked into the chamber 25 through the mouth ring 26 of the fan chamber 24 . In this outdoor air, the condensed water accumulated in the lower part of the outdoor fan 18 is scattered into mist, and the outdoor air containing misty condensed water is blown to the outdoor heat exchanger 15 to cool the outdoor heat exchanger 15 . Therefore, the condensed water is evaporated on the surface of the outdoor heat exchanger 15 .

By turning on the power switch of the electrical component 11 located at the lower part of the decorative cover 3 and having the operation part, the integrated air conditioner 1 starts to operate. , can constitute air-conditioning operation or heating operation, and other operating modes, and in the description of this embodiment, the operation of air-conditioning is described.

By turning on the power switch, the high-temperature and high-pressure gaseous refrigerant generated by the compressor 14 is sent to the outdoor heat exchanger 15, and the refrigerant entering the outdoor heat exchanger 15 is cooled by the outdoor air blown by the outdoor fan 18 to become The high-pressure liquid refrigerant whose temperature has dropped is sent out from the outdoor heat exchanger 15 . The refrigerant sent out of the outdoor heat exchanger 15 is reduced in pressure by a decompression device (not shown), and enters the indoor heat exchanger 16 as a low-pressure liquid refrigerant. The low-pressure liquid refrigerant entering the indoor heat exchanger 16 absorbs heat from the indoor air sucked by the indoor fan 19 through the indoor heat exchanger 16, evaporates, changes into a low-temperature low-pressure gaseous refrigerant, and is sucked into the In the compressor 14 , the high-temperature and high-pressure gaseous refrigerant is compressed by the compressor 14 , and the refrigeration cycle of the integrated air conditioner 1 is performed again.

On the other hand, when the indoor air sucked by the indoor fan 19 passes through the indoor heat exchanger 16, the heat is taken away by the refrigerant to be cooled, and at the same time, the moisture contained in the air is condensed and dehumidified to become dry cold air. It is discharged into the room from the room air outlet 10. After such repetitions, the indoor environment is adjusted to a comfortable state suitable for living.

In addition, the condensed water condensed by the indoor heat exchanger 16 is collected in the dew container 21 arranged at the bottom of the indoor heat exchanger 16, introduced into the water guide passage 22, passes through the partition plate 6, and accumulates in the lower part of the outdoor fan 18. In the water storage part 23, the condensed water is splashed by the splash ring 18c provided on the outdoor fan 18.

In the integrated air conditioner described in Patent Document 2, the outdoor fan uses a propeller fan, which will be described with reference to FIG. : The collision sound of the water droplets lifting up the condensed water colliding with the blades of the propeller fan, and the collision sound of the scattered water droplets bounced by the propeller fan blades hitting the cooling fins of the outdoor heat exchanger are all increased. In addition, there is a problem that since the guide ring for adjusting the airflow of the propeller fan blade can only be set along the outer periphery of the propeller fan blade, the diameter of the guide ring becomes larger, and the water droplets splashed by the blades bounce off the guide ring part. Fly out to the outside of the fan room, and the generated water droplets are scattered to the outside by the outdoor air inlet of the integrated air conditioner.

In addition, there are also problems: the splash ring arranged on the propeller fan that lifts up the condensed water has a certain distance from the propeller fan blade, and when its diameter increases, the strength becomes weaker, so it cannot fully Ensure the clearance from the propeller fan blades. Therefore, once the amount of condensed water in the water storage part installed at the lower part of the outdoor heat exchanger increases, there is a problem that not only the splash ring but also the blades of the propeller fan come into contact with the water surface of the condensed water, causing blade flapping Simultaneously with the sound of condensed water, the condensed water splashed by the blades is scattered from the air suction port to the outside of the integrated air conditioner.

On the other hand, in Patent Document 1, the outdoor fan adopts a multi-blade fan, and the outdoor air is sucked in from the outdoor heat exchange side through the outdoor heat exchanger. Moreover, the condensed water is scattered into the outdoor air sucked into the cover by the splash ring of the multi-blade fan, and discharged to the outside as it is from the outdoor air outlet provided beside the outdoor heat exchanger. Because the outdoor air sucked by the multi-blade fan through the outdoor heat exchanger is sucked through the mouth ring of the cover, the condensed water scattered by the splash ring is scattered on the outdoor heat exchanger, and cannot be evaporated.

Therefore, there is a problem that the condensed water scattered in the outdoor air exists in the air in the form of fine water droplets, and the condensed water is discharged outside in the form of water droplets to wet the surroundings of the outdoor air outlet, and at the same time, the fine water droplets gather. Together, dripping water from the all-in-one air conditioner. In addition, although there is a method of improving the heat exchange efficiency of the outdoor heat exchanger by blowing air that is sufficiently moisture-containing into the outdoor heat exchanger, in the case of Patent Document 1, due to the presence of air that is initially sucked in by the outdoor heat exchanger Therefore, it is not possible to effectively use the outdoor air that disperses the condensed water and contains sufficient moisture. In addition, by blowing the mist-like condensed water in the air to the high-temperature outdoor heat exchanger, although the mist-like condensed water can be evaporated, however, in Patent Document 1, since it is not blown to the outdoor heat exchanger, but It is discharged from the outdoor air outlet in the original state, so the condensed water will cause various problems due to the presence of the original water droplets.

In the embodiment, the outdoor fan adopts a centrifugal fan to blow the outdoor air containing condensed water to the outdoor heat exchanger, so as to improve the heat exchange efficiency of the outdoor heat exchanger and prevent the condensed water from flowing from the integrated air conditioner. The air outlet of the machine drips to the outside.

As shown in Figure 5 or Figure 13, one end of the blade of the centrifugal fan is fixed along the circumference of the hub with the hub of the centrifugal fan fixed on the rotating shaft, and the other end of the blade is fixed on the On the guard of the ring-shaped disc of the air intake port. Then, the rotation of the centrifugal fan sucks in air from the direction of the rotation axis of the centrifugal fan, the hub disc deflects the air flow in the centrifugal direction, and discharges the air in the centrifugal direction of the blades. In order to induce the air discharged in the centrifugal direction to a certain direction, a cover is generally used.

In Patent Document 1, a forward-inclined centrifugal fan called a multi-blade fan is generally used, and in Patent Document 3, a backward-inclined centrifugal fan called a turbo fan is used.

However, when the centrifugal fan is used as an outdoor fan, as described above, the air sucked into the centrifugal fan from the axial direction is deflected by the hub plate on the opposite side of the suction part and discharged in the centrifugal direction. . Therefore, like a propeller fan that can make air flow in the axial direction, the sucked air cannot be discharged to the outdoor heat exchanger as it is. Therefore, in the case of the patent document 1 in which the multi-blade fan is adopted as the outdoor fan, after the outdoor air is sucked in through the outdoor heat exchanger, the water accumulated in the water storage part inside the cover is picked up by the splash ring arranged on the centrifugal fan. The condensed water is sprinkled in the draft of the outside air. However, the outdoor air containing condensed water cannot be blown to the outdoor heat exchanger, but is introduced into the air discharge port provided on the side of the outdoor heat exchanger through the cover, and discharged to the outside of the integrated air conditioner.

Also, in the case of patent document 3 in which a turbo fan is used as an outdoor fan, as in patent document 1, outdoor air is sucked in through the outdoor heat exchanger, and the sucked outdoor air is guided to the centrifugal direction by the air deflector. Although the treatment of condensed water is not involved in Patent Document 3, the outdoor air discharged in the centrifugal direction by the outdoor fan is not blown to the outdoor heat exchanger and is introduced into the outdoor side ventilation passage, from the outdoor heat exchanger The air outlets on both sides discharge to the outside of the integrated air conditioner.

As described above, when the centrifugal fan is used as the outdoor fan, outdoor air is sucked in through the outdoor heat exchanger. Therefore, the heat exchange efficiency of the outdoor heat exchanger cannot be improved by scattering the condensed water into the inhaled outdoor air and blowing the airflow with high humidity to the outdoor heat exchanger. The outdoor fan of this embodiment adopts a centrifugal fan, which makes the condensed water become mist and scatter in the outdoor air discharged from the centrifugal fan, and blows the airflow containing misty condensed water to the outdoor heat exchanger, which improves the outdoor heat exchange. While improving the heat exchange efficiency of the air conditioner, a high-temperature outdoor heat exchanger is used to evaporate the mist condensed water so that it does not discharge the watery condensed water to the outside of the integrated air conditioner.

An embodiment of the integrated air conditioner of the present invention will be described below with reference to the accompanying drawings. In this embodiment, the outdoor fan 18 is a centrifugal fan with backward-inclined blades relative to the rotation direction shown in FIGS. 5 and 6 . Furthermore, on the inner diameter side of the shroud 18a of the outdoor fan 18, an air suction portion 18b for sucking air is provided, and a splash ring 18c for scattering condensed water is provided on the peripheral side. The plurality of blades 18d are formed between the hub 18e and the shroud 18a in a backward-inclined shape with respect to the rotation direction, and the outer peripheral portion of the backward-inclined blades 18d is formed into a substantially cylindrical shape with respect to the rotation axis.

In addition, the multi-bladed blower shown in FIG. 13 employed in Patent Document 1 is a centrifugal blower in which the blades are inclined forward with respect to the direction of rotation. In addition, the propeller fan shown in FIG. 11 used in Patent Document 2 is an axial flow in which the blades are not inclined in the direction of the rotation axis, and the blades can be twisted with respect to the normal axis in the radial direction to blow air in the direction of the rotation axis. fan.

The outdoor fan 18 of the present embodiment is shown in Figure 7 and Figure 8, the suction portion 18b of the outdoor fan 18 is opened toward the side of the fan motor 17, the outdoor air is sucked in as shown by the arrow, and the air discharged in the centrifugal direction is blown. into the chamber 25 formed by the outdoor heat exchanger 15 and the fan chamber 24.

The suction side of the chamber 25 is provided with a collar 26 provided on the fan chamber 24 . The diameter (inner diameter) of the end portion of the collar 26 is smaller than the diameter of the suction portion 18b of the outdoor fan 18 . Then, the end of the collar 26 protrudes to the inside of the suction portion 18b, and overlaps the suction portion 18b by only the dimension L.

Therefore, the interior of the chamber 25 is mostly covered with respect to the exterior, and a static pressure higher than that of the exterior can be maintained.

And, generally, the airflow discharged from the centrifugal fan is guided in a certain direction by the cover, but in this embodiment, it is directly discharged without providing a cover that can be guided into the chamber 25 . Because the airflow discharged from the outdoor fan to the centrifugal direction is not covered, the airflow velocity of the discharge becomes slow, and the static pressure in the chamber 25 increases because the energy of the slowed speed component is converted into a component that increases the static pressure. As the static pressure in the chamber 25 increases, the air flow flows directly to the back of the hub 18e of the outdoor fan 18, thereby effectively utilizing the outdoor heat exchanger 15 located at the back of the hub 18e.

Detailed description will be given below. When using this existing centrifugal fan, there is a problem that although it is made to discharge the airflow from a predetermined position like the discharge port on the indoor side, if it is used on the outdoor side as it is, since only the outdoor heat exchange Part of the air in the outdoor heat exchanger is circulating, and the heat exchange rate of the remaining outdoor heat exchanger is low.

In order to increase the static pressure of the space from the outlet of the outdoor fan to the outdoor heat exchanger, as described above, no cover or the like is provided to cover this space. Therefore, due to the increase of the static pressure of the space, the pressure will be exerted on most of the outdoor heat exchangers, since the air discharged from the fan flows between the fins from all the surfaces bearing the pressure of the outdoor heat exchangers and then Outflow, so the utilization rate of the heat exchanger is increased.

The following describes how to increase the treatment capacity of condensed water. If the amount of condensed water in the existing dew container which is installed at the lower part of the indoor heat exchanger to collect condensed water is too much, it cannot be treated by the outdoor fan. Make a slow slope between the dew container and the water storage part at the lower part of the outdoor fan.

In this embodiment, since the air suction part of the chamber 25 is mostly covered, the splash ring 18c arranged on the outer periphery of the outdoor fan 18 lifts up the condensed water accumulated in the lower part of the outdoor fan 18, even if it is scattered in the chamber 25 , the scattered condensed water will not fly out to the outside of the chamber 25 through the mouth ring 26 of the fan chamber 24 . Therefore, the situation that water droplets are scattered outside or dripped down through the upper air inlet 12 or the side air inlet 13 of the box body 4 is reduced. Therefore, the amount of water lifted up by the splash ring 18c can be increased, and the ability to treat condensed water by the outdoor heat exchanger 15 can be improved.

Since the processing capacity of the condensed water on the outdoor side is improved, the inclination of the water guide passage 22 provided between the dew container 21 and the water storage part 23 can be increased to increase the outflow of condensed water. Moreover, it is not necessary to provide a water storage part.

If the inclination of the water guide path 22 is increased, the height position of the dew container 21 relative to the water storage portion 23 will be increased. Thus, a space is created under the dew container 21 . Since the existing electrical component box 11 arranged under the indoor air outlet 10 is disposed in this space, the arrangement of the air outlet 10 on both sides of the indoor air inlet 9 is advantageous as follows.

First, the opening of the air outlet 10 can be enlarged;

Like this, in the present embodiment, owing to can dispose electrical parts box 11 on the bottom of dew container 21, thereby, the space adjacent to air suction port 9 (air discharge port 10, the upper space of air discharge port 10) Or the lower space) is used for various purposes, which has the effect of increasing the freedom of product design.

On the other hand, when the outdoor fan adopts a propeller fan like Patent Document 2 as shown in FIG. The diameter increases. Therefore, there is a problem that the condensed water splashed by the blade bounces out of the air inlet of the guide ring to the outside of the fan chamber, and the water droplets are scattered outside from the outdoor air inlet of the integrated air conditioner as they are. Moreover, as in this embodiment, even if the inner diameter of the mouth ring 26 is smaller than the outer diameter of the fan, the water splash when the fan blade beats the water surface may fly from the mouth ring to the outside.

However, in the case of this embodiment, since the suction portion 18b of the outdoor fan 18 as a centrifugal fan overlaps with the end of the mouth ring 26 of the fan chamber 24, the inside and outside of the chamber 25 are mostly covered, so Therefore, droplets of condensed water scattered to the inside of the chamber 25 are not scattered to the outside through the air suction port of the integrated air conditioner 1 . Therefore, the effects as described above are produced.

The droplets adhering to the top surface of the fan chamber 24 picked up by the splash ring 18c of the outdoor fan 18 drip down from the top surface of the fan chamber 24 as shown in FIG. 9 , and collide with the blades 18d of the outdoor fan 18 . In the outdoor fan 18 of this embodiment, as described above, the blade 18d is inclined backward with respect to the rotation direction T, and the outer peripheral end of the blade 18d is substantially cylindrical with respect to the rotation axis of the blade 18d. Although the falling water droplets have landed in the ranges A and B equivalent to the outer peripheral surface of the blade 18d, since the blade 18d rotates in the T direction, in the range A, the blade 18d and the falling water droplets collide at the sum of their respective velocities. , in the range B, the collision is carried out with the difference of their respective velocities. Since the free-falling speed of the water droplets reaching the surface of the cylindrical blade 18d is about 1m/s, which is far less than the rotational speed of the outer periphery of the blade 18d, the noise generated by the collision between the falling water droplets and the blade 18d can be considered to be from the range A Water droplets are produced. Moreover, the situation of the present embodiment is considered as follows: since the falling water droplets collide with each other on the outer peripheral surface C of each blade 18d, the relative speed of the collision is the displacement speed in the radial direction of the blade 18d. and the sum of the free fall velocity of the water droplet reaching the surface of the cylindrical blade 18d.

In this embodiment, since the diameter of the outdoor fan 18 is about 290mm, the number of blades 18d is 7, the number of revolutions of the outdoor fan 18 is about 1200rpm, and the amount of movement L' in the circumferential direction of each blade 18d is about 50mm , so, it can be considered that the relative velocity of the collision between the blade and the water droplet is about 8m/s.

Correspondingly, when the outdoor fan adopts a propeller fan, as shown in Figure 11, since the blades stand upright on the normal axis in the radial direction, the water droplets dripping from the top surface of the fan chamber are tangent to the blades of the propeller fan. Therefore, the collision is performed at a relative speed obtained by synthesizing the speed of the freely falling water droplet and the tangential direction speed of the blade, and the relative speed is considered to be about 18 m/s.

The noise generated when the falling water droplet collides with the rotating blade is related to energy, so it can be considered to be proportional to the energy of the water droplet with mass m. Since the kinetic energy P of the water droplet m colliding with the relative velocity V is p=m*V ² /2, the noise level when the water droplet collides with the blade is proportional to the square of the relative velocity.

In the case of the outdoor fan 18 of the present embodiment, since the relative speed during the collision is about 45% of the speed of the propeller fan, its energy P is reduced to about 20% relative to the propeller fan, and a low noise level can be obtained. Body type air conditioner 1.

Also, in the case of a propeller fan, after the water droplet m with energy P collides at a relative speed V, it is scattered in the opposite direction at a speed V', and the rotating fan imparts energy equivalent to the amount of motion to the water droplet m. Part of the fan will use the motor to consume excess power. But, the outdoor blower 18 of present embodiment is owing to be that the water droplet falling to blade 18d surface one after another is scattered from the outer peripheral end of blade 18d along with the air-flow that flows through blade 18d surface and is foggy, so fan motor 17 is unnecessary. In order to scatter the water droplets m, the energy for driving the outdoor fan 18 is sufficient to consume unnecessary energy, and the energy-saving integrated air conditioner 1 can be obtained without consuming unnecessary power.

Also, when the multi-blade fan is used as the outdoor fan, since the water droplets falling from the top surface of the fan chamber land on the cylindrical surface of the rotating blades of the multi-blade fan one after another, the noise of water droplet collision becomes smaller. However, because the blades of the multi-blade fan are tilted forward, the falling water droplets are scattered in the tangential direction due to the rotating blades at the same relative speed as the propeller fan. .

The integrated air conditioner 1 of the present embodiment cools the high-temperature compressor 14 and the high-temperature blower fan motor 17 with the outdoor air sucked in by the outdoor fan 18 from the upper air inlet 12 and the side air inlet 13 of the casing 4. . Comparing the surface temperatures of the outdoor air and the high-temperature compressor 14 and the high-temperature fan motor 17, since the temperature is relatively low, the high-temperature compressor 14 and the high-temperature fan motor 17 can be effectively cooled. And, as shown in Figure 7, the outdoor air for cooling the compressor 14 and the fan motor 17 is sucked into the chamber 25 from the fan motor 17 side through the mouth ring 26, and the air accumulated in the outdoor fan 18 bottom is made by the splash ring 18c. The condensed water scatters and disperses in the air along with the airflow from the outer peripheral end of the blade 18d into mist, and blows it to the outdoor heat exchanger 15 as an airflow with high moisture content and high humidity. As a result, the outdoor heat exchanger 15 becomes covered by the cool condensed water condensed by the indoor heat exchanger 16, and becomes a wet surface; due to the wet surface, the overall heat transfer coefficient of the outdoor heat exchanger 15 is improved, The latent heat of evaporation of water can also be utilized, so that the heat exchange efficiency of the outdoor heat exchanger 15 is greatly improved.

In the case of Patent Document 1, the outdoor fan adopts a multi-blade fan, and a splash ring is provided on the outer periphery of the shroud disc on the side of the air suction port where the multi-blade fan blades are installed to scatter condensed water. However, although the outdoor air is sucked in from the side of the outdoor heat exchanger, and the condensed water is scattered into the sucked outdoor air and turned into mist, the airflow containing the condensed water and becoming humid cannot be blown to the outdoor heat exchanger. It is used for cooling the outdoor heat exchanger, but it is discharged to the outside through the air outlet provided on the side of the outdoor heat exchanger. In addition, in Patent Document 3, the outdoor fan adopts a centrifugal fan, but the outdoor air is still sucked in from one side of the outdoor heat exchanger, and the condensed water cannot be scattered into the outdoor air. The air discharge port is discharged as it is.

As described above, in the present embodiment, the outdoor air is sucked in from the upper air inlet 12 and the side air inlet 13 of the outer case 4, and the high-temperature compressor 14 and the high-temperature fan motor 17 are cooled. The outdoor air is sucked from the side of the fan motor 17 through the mouth ring 26 of the fan chamber 24, and the condensed water is scattered into the outdoor air sucked into the chamber 25 in the form of mist to become a humid air flow and blown to the outdoor heat exchange. It makes the outdoor heat exchanger a wet surface and improves the heat exchange efficiency. In addition, the condensed water condensed by the outdoor heat exchanger is picked up with the splash ring 18c, and since the outer peripheral end of the blade 18d of the outdoor fan 18 is turned into fine mist and scattered in the air flow, it can be sprayed on the surface of the outdoor heat exchanger 15. The condensed water is easily evaporated without scattering the condensed water to the outside of the integrated air conditioner 1 as water droplets. Also, since the splash ring 18c of the outdoor fan 18 is integrally formed with the outer circumferential plate of the shield 18a, the distance between the blades 18d can be sufficiently ensured without reducing the strength of the splash ring 18c. Therefore, even if the condensed water in the water storage part 23 arranged at the bottom of the outdoor fan 18 accumulates too much, the blade 18d of the outdoor fan 18 cannot hit the water surface of the condensed water, so when the condensed water is bounced off with the blade 18d, and While the condensed water is discharged from the air suction port of the integrated air conditioner, there is no noise of slapping the condensed water. Thus, the amount of treated water can be increased.

Next, the indoor side 8 will be described. By increasing the treatment amount of condensed water on the outdoor side, a space is formed under the dew container 21, and by arranging the electrical component box 11 in this space, the space for installing the air outlet 10 can be increased as described above. degrees of freedom. However, in the part where the space is provided under the indoor heat exchanger 16, the overall height becomes high unless the size of the indoor heat exchanger is changed. In addition, if the height dimension of the indoor heat exchanger 16 can be changed, the amount of exchanged heat is reduced. At this time, since the diameter of the fan is also reduced, the air volume is also reduced. Embodiments for solving such problems will be described below.

Most of the existing fans on the indoor side adopt multi-blade fans. However, the indoor fan 19 in this embodiment also adopts a turbo fan with backward inclined wings as shown in FIG. 14 . And, as shown in Figure 1 and Figure 15, an air suction port 9 is provided at the central part of the decorative cover plate 3, and air discharge ports 10 are provided on both sides of the air suction port 9, so as to be discharged from both sides of the decorative cover plate 3. cold wind. By discharging the cold air from both sides of the decorative cover plate 3, compared with the case where the cold air is discharged into the room from one air outlet, the temperature of the room can be evenly lowered, so that the cold air can be sent to a wider range of the room. In addition, an air discharge port may be provided on the upper portion of the air suction port 9 . At this time, since the air flow to the ceiling is generated, the room can be cooled without dead space.

In addition, when the integrated air conditioner 1 is installed, it is possible to eliminate the restriction on the installation condition that it is difficult to blow cool air to the entire room due to the location of the air outlet close to the wall or the like.

The air volume-static pressure characteristic of the centrifugal fan is shown in FIG. 17 . The air volume-static pressure characteristic curve of the turbo fan with the backward inclined wing is I, and the characteristic curve of the multi-blade fan with the forward inclined wing is expressed as II. Therefore, when the air volume is the same, the static pressure of the centrifugal fan is smaller than that of the forward-leaning multi-blade fan, and the expansion angle of the cover is smaller, so the centrifugal fan can be accommodated in a relatively small space. Fan and hood.

When the multi-blade fan is used as the indoor fan, as shown in Fig. 16, the expansion angle of the cover of the multi-blade fan becomes large, and since the front end of the cover is wide, cold air tends to be sent from the lower and upper parts of the air outlet. In addition, because the static pressure becomes high, the flow of the cold wind tends to be along the outer peripheral direction of the cover, and the cold wind discharged from the air discharge port cannot be evenly discharged from the entire air discharge port. The side ends deflect in the direction of the arrow to discharge cold air.

In this embodiment, in order to solve the above-mentioned problems, a backward-inclined fan turbo fan is used as the indoor fan 19 . As described above, since the expansion angle of the cover 20 of the indoor fan 19 can be small, the widened portion of the front end of the cover 20 can be reduced. As shown in FIG. 15 , the widened portion of the front end of the cover 20 and the height of the air discharge port 10 are made to be approximately the same height, so that cool air is sent from the lateral direction of the air discharge port 10 . Therefore, the cold air with reduced static pressure and reduced deviation can be blown laterally from the air outlet 10 , so that the cold air can be evenly discharged from the entire air outlet 10 .

Also, in the case of Figure 16 where the indoor fan adopts a multi-blade fan, since the expansion angle of the cover is relatively large, the space for storing electrical components only utilizes the opening space of the cover. Therefore, the storage space of the electrical components is restricted by the position of the opening of the cover. Since it is arranged on either side of the integrated air conditioner, when the integrated air conditioner is installed, in order to prevent the operation part of the electrical components from approaching the wall, it is difficult to operate. The installation problem arises that the operating part of the electrical component is separated from the wall surface.

As previously explained, since the indoor fan 19 adopts a turbo fan, the expansion angle of the cover 20 can be reduced, and the shape of the fan containing the cover 20 can be miniaturized compared with the case of using a multi-blade fan.

For this reason, the height of the position of the dew container 21 can be increased, even if the electrical component box 11 is configured at its bottom, the air volume of the blower fan can be guaranteed without increasing the height of the whole assembly.

However, as shown in FIG. 18, since the base 5 supports the weight of the components loaded in the assembly 2, the periphery of the base 5 is squeezed to the upper part and a standing edge 5a is provided to ensure necessary strength. Therefore, even if the height dimension H of the electrical components 11 having the operating portion stored on the top of the base 5 can be ensured, the effective height becomes H' due to the standing edge 5a, and thus the upper space of the base 5 cannot be utilized. Therefore, in the present embodiment, by not storing the electrical component 11 with the operating part in the upper space of the base 5 with the vertical edge 5a, and at the bottom of the base 5 on the opposite side with the vertical edge 5a, a storage device with an operating portion is provided. The space 5b (refer to FIG. 2 ) of the electrical component 11 of the upper part is stored therein so that the electrical component 11 having the operating part is stored there. That is, the space generated by the indoor fan 19 using a turbo blower makes the dew container 21 higher, and the base 5 at the bottom of the dew container 21 is squeezed to the height of the dew container 21, thereby storing the electrical components 11 with the operating portion on the base 5. lower part.

Thus, in order to ensure the strength of the base 5, the vertical side 5a remains as it is, and since the electrical components 11 with the operating portion can be arranged in the center of the decorative cover 3, it is possible to maintain the strength of the integrated air conditioner 1 without compromising the strength of the integrated air conditioner 1. Eliminate constraints during installation. In addition, by storing the electrical components 11 with the operating portion on the lower portion of the base 5, in case of a breakdown in the electrical components 11 equipped with the operating portion, the maintenance operation can be facilitated, the maintenance time can be shortened, and the work efficiency can be improved. .

In addition, since the height of the dew container 21 can be increased to be higher than the existing height, the condensed water in the dew container 21 can be introduced into the water guide passage 22 arranged in the water storage part 23 at the bottom of the outdoor fan 18. Therefore, water can be reliably sent to the water storage part 23 without causing the condensed water to overflow from the dew water container 21 and the water guide passage 22 . In addition, due to the vertical edge 5a of the base 5, for the height space that cannot be effectively utilized, the heat insulating material at the bottom of the dew container 21 can be thickened to improve its heat insulation effect, thereby eliminating the electrical components with the operating portion due to heat conduction. 11 Condensation problem.

Furthermore, by arranging the electrical component 11 having the operating portion at the central part of the integrated air conditioner 1, since a free space can be ensured at the bottom of the air discharge port 10, a small motor can be arranged in the space, so that it can be installed in the air outlet. The wind direction deflecting plate etc. of the air outlet 10 can operate automatically. Also, in this embodiment, although the air outlets 10 provided at two positions on the left and right have been described, since the expansion angle of the cover 20 becomes smaller, a plurality of air outlets can be provided so that it can be installed in the room. The cold air can be evenly discharged in a wide range.

Also, in this embodiment, the integrated air conditioner 1 has been described only in terms of temperature reduction, and by switching the structure of the refrigeration cycle to cooling operation, heating operation, and other operation modes and performing operation, each operation can The above effects can be obtained.

As mentioned above, if the outdoor fan adopts the propeller fan, there are the following problems. A splash ring for lifting condensed water is installed on the outer periphery of the propeller fan blade. However, in order to achieve high wind quantization of the propeller fan, when the outer diameter of the propeller fan is increased, the outer diameter of the fan will be quite close to the outer diameter of the splash ring arranged on the outer periphery of the propeller fan. Therefore, when there is too much water, a part of the propeller fan will lift up the condensate. Since the front end of the propeller fan blade is incident at a right angle to the water surface, if the blades of the propeller fan lift up the water, the blades of the fan will directly slap the water, causing the slapped water to disperse in multiple directions. At this time, the sound of the propeller fan directly hitting the water and the noise generated by the bouncing water hitting the inside of the box are obstacles to reducing noise. In addition, there is a particular problem that although an inlet for sucking outside air into the cabinet is provided in the outdoor side cabinet, scattered condensed water is scattered from the inlet to the outside against the flow of the wind. There is also a problem that the input of the blower motor is increased due to the propeller fan directly beating the condensed water.

In this embodiment, although the turbo blower formed in the shape of a backward inclined blade is used, this is mainly to solve the following problems. In addition, although these problems were enumerated, these problems were aimed at and achieved effects in this Example, and it is not intended to limit this invention.

In an air conditioner in which an outdoor fan is installed on the upstream side of the condenser (upstream of the wind), the first problem is caused by the boosting effect of the fan, that is, the problem to be solved is that it cannot The problem of sufficient heat exchange is caused by the discharge at the outer peripheral part and the short-circuit problem of the reverse flow at the inner diameter part. In order to use the blade of the fan to perform a large air deflection, the airflow causes peeling on the airfoil surface, and the noise increases. The problem of a significant drop in efficiency. The second is the issue caused by the splash ring installed on the outer periphery of the fan and the condensation raised by the outer periphery of the blades. That is, the problem to be solved is: the sound generated when the blades of the fan directly hit the water is caused by the impact of the bouncing water The sound problem caused by the inside of the box, and the problem that the input of the blower motor is raised because the fan directly beats the condensed water. The third is to solve the problem of scattering of condensed water discharged from the inlet for taking in outside air and the discharge part of the condenser.

Next, the outdoor fan applied to this integrated air conditioner will be described in detail, but before that, the main points will be briefly explained.

First, a fan (centrifugal fan) consisting of a hub, a plurality of blades, and a shroud has a blade whose outer diameter becomes smaller in the direction from the shroud side to the hub side or is still variable despite changing poles. The blades of the small form are provided with a dew-scattering effect on the outer peripheral portion of the shroud, and a ring having an annular structure whose outer diameter is larger than the outer diameter of the blade.

Second, an annular ring having a larger outer diameter than the outer diameter of the blades and having holes through which exhaust air passes is provided on the hub outer peripheral portion of the centrifugal blower.

Thirdly, an annular ring of holes through which air passes is provided on the outer peripheral portion of the blade located between the shroud and the hub of the centrifugal blower.

Fourth, in a centrifugal blower equipped with a hub, a plurality of blades, and a shroud, and an annular ring having condensation scattering effect is provided on one side of the shroud, the outer diameter of the blade has a diameter extending from the side of the shroud to the hub. A blade that becomes smaller in the direction of one side or has a pole-changing point but is still small, and has a shape that has at least two pole-changing points on the meridian plane, and the airflow discharged is in the axial direction. .

Fifth, a centrifugal blower equipped with the above-mentioned annular ring, which has a blade in which the outer diameter of the blade becomes smaller in the direction from the shroud side to the hub side, or the shape of the blade is still smaller although there is a pole change point, Its structure is: the outer diameter of the blade on the side of the hub is less than 85% of the outer diameter of the blade on the side of the shield, the inner diameter of the blade on the side of the shield is greater than 75% of the outer diameter of the blade on the side of the shield, and the width of the blade outlet is greater than the outer diameter of the blade. 25% of the diameter, and the inner diameter of the blade on the hub side is less than 75% of the outer diameter of the blade.

Sixth, in the centrifugal blower equipped with the above-mentioned annular ring, when the width of the blade outlet is greater than 30% of the outer diameter of the hub, or when the inner diameter of the blade on the side of the hub is less than 50% of the outer diameter of the blade, the gap between the blade and the blade Between, set the small vane whose inner diameter is larger than the inner diameter of the vane on one side of the hub.

The centrifugal blower of this embodiment will be described with reference to Fig. 19 and Fig. 20. Fig. 19 and Fig. 20 are schematic perspective views and meridional plane diagrams showing the centrifugal blower.

The centrifugal blower 18 is composed of the following parts: a hub 18f having a hub 18g that transmits the rotational force from the fan motor 17 at the center of rotation; a plurality of blades 18d arranged at regular intervals on the hub 18f; A shroud 18a connected sideways to each blade. The blade 18d can be made into a shape in which the outer diameter of the shroud 18a side is set as the largest outer diameter on the hub 18f side, as shown in the figure, or it can be used to discharge the blade from the shroud side to the hub side. The flow velocity distribution of the airflow is normalized with a change of pole midway. In addition, although the outer diameter of the hub side of the blade 18d is equal to the hub diameter _D2H in the figure, it may be larger than the hub outer diameter. In addition, it is characterized in that the inner diameter D ₁ H on the hub side of the blade is considerably smaller than the inner diameter D ₁ S on the shroud side.

On the outer periphery of the shroud 18a having an outer diameter _D2SL larger than the blade outer diameter _D2 , a ring _- shaped splash ring 18c is formed. The splash ring 18c can also be made into a shape that can effectively lift up the condensation as shown in the figure, that is, the outer peripheral part is in a cylindrical shape parallel to the axis.

The splash ring 18c of the centrifugal blower 18, since the relationship between the maximum outer diameter D ₂ of the blade and the outer diameter D ₂ S _L of the splash ring 18c is D ₂ S _L > D ₂ , at a position at an appropriate distance from the maximum outer diameter D ₂ of the blade A splash ring 18c is provided, so that it hardly occurs that the blade 18d is immersed in condensed water.

For example, even if the water level rises to the position where the blades 18d are immersed in condensed water, since the centrifugal blower is a turbo type fan whose blades are made into a backward inclined blade shape, since the blade surface of the blades 18d passes close to the water surface, the splashed water will flow from The possibility of the air intake being scattered to the outside is reduced. On the other hand, in the case of a propeller fan, since the blades of the propeller fan have an acute angle of incidence with respect to the water surface, the blades beat the water surface at an acute angle. Fly outside the outdoor unit.

Therefore, as an ideal state, since the condensed water is usually picked up only by the splash ring 18c, the noise when the water is picked up is reduced. Also, if the centrifugal blower is installed as an outdoor fan, the inlet diameter D ₁ S of the centrifugal blower is smaller than that of the existing propeller fan. There is almost no splashing, therefore, no condensed water is scattered from the air suction port provided on the outdoor side of the box. Therefore, it is possible to increase the water holding capacity of the splash ring 18c without condensed water splashing to the outside or outside the machine, and to increase the condensed water treatment capacity.

In addition, by making the shape of the blade 18d such that the maximum outer diameter D ₂ on the shroud side and the outer diameter D ₂ H on the hub side are D ₂ >D ₂ H, generally the wind speed and air volume on the hub side can be increased. While appropriately adjusting the wind speed and air volume distribution in the width direction of the outlet of the centrifugal fan, the workload of the blower on the side of the hub can be reduced. Compared with the existing centrifugal fan with a blade outer diameter almost parallel to the rotation axis Compared with the blower, it has been proved that the power consumption of the blower motor can be reduced by about 8%. Therefore, by using the centrifugal blower 18, the blower motor can save power.

Next, examples of other centrifugal blowers will be described using FIGS. 21 and 22 .

The centrifugal blower 18 is composed of the following components: a hub 18f with a hub 18g that transmits the rotational force from the fan motor 17 at the center of rotation; a plurality of blades 18d arranged on the hub 18f at regular intervals; A shroud 18a connected to each blade on one side.

The centrifugal blower 18 is provided with an annular splash ring 18c at a certain distance from the outer circumference of the hub 18f. The hub 18f and the splash ring 18c are connected by a plurality of pillars 201, and a gap 202 is formed between each pillar 201. structure. For example, the outer diameter of blade 18d is made to have changing poles and alternately arranged almost parallel to the axis of rotation, holes are set on the splash ring of the blade parts with changing poles, and when other blade parts are used to connect hub 18f and splash ring 18c, there are Can be formed into one effect.

Next, an example in which the above-mentioned centrifugal blower 18 is used as an outdoor fan of an integrated air conditioner will be described. Since the splash ring 18c of the centrifugal blower is provided on the side of the hub 18f, the splash ring 18c is arranged near the outdoor heat exchanger 107 in a structure. Therefore, the proportion of directly blowing the condensed water raised by the splash ring 18c to the heat exchanger is increased, so that the condensed water can be subjected to high-efficiency heat exchange treatment. Therefore, it is possible to increase the treatment amount of condensed water, temporarily store the water in the dew water container provided at the lower part of the indoor heat exchanger without using a water storage device; it is possible to send the water to the device without remaining condensed water In the water storage part of the lower part of the outdoor fan. As a result, the height position of the dew container can be higher than that of the water storage part, and the electrical component box can be placed in the empty space below the dew container, which is the same as the above-mentioned various embodiments.

Another embodiment in which a splash ring is provided on the side of the hub 18f shown in Fig. 23 and Fig. 24 . The outer diameter of the blade 18d changes from the side of the splash ring 18a to the side of the hub 18f, or has a structure that becomes smaller while having a pole changing point. However, since the splash ring 18c is installed as another part On the hub 18f or near the hub 18f, the wind blowing effect and the splashing effect will be produced to the greatest extent.

Next, other embodiments will be described using FIG. 25 and FIG. 26 .

The centrifugal blower 18 is composed of the following components: a hub 18f having a hub 18g that transmits the rotational force generated by the fan motor 17 is provided at the center of rotation; a plurality of blades 18d are arranged at certain intervals on the hub 18f; The shroud 18a connected to each blade on the opposite side of 18f.

In the centrifugal fan 18, a splash ring 18c is provided at a certain distance from the blade 18d on the outer periphery of the blade 18d, and the splash ring 18c and the blade 18d are connected by the outer diameter of the blade.

By using the above-mentioned centrifugal blower 18 on the fan on the outdoor side of the integrated air conditioner, in addition to having the same effect as the above-mentioned embodiment, the direction of the airflow discharged from between the shroud 18a and the hub 18f can also be downstream. Turning one side to any direction has the effect of reducing the loss of exhausted air.

In the figure, although the splash ring 18c is inclined to the downstream side, it can adopt a shape that can maximize the blowing effect and the splashing effect.

Next, another embodiment will be described with reference to FIG. 27 . The centrifugal blower 18 is composed of the following components: a hub 18f with a hub 18g that transmits the rotational force generated by the fan motor is provided at the center of rotation; a plurality of blades 18d are arranged on the hub 18f at certain intervals; The opposite side is connected to the shroud 30 of each blade. The shape of the discharge portion 30a of the shroud 30 is formed in the axial direction. A splash ring 18c is attached to the outer peripheral portion of the shroud 30 .

Generally, the centrifugal blower discharges the fluid sucked from the suction port 401 in the circumferential direction, while the centrifugal blower 18 causes the fluid sucked in from the suction port 401 to flow axially along the shroud 30 .

By using the centrifugal blower 18 on the fan on the outdoor side of the integrated air conditioner, since the air sucked in from the axial direction of the blower is directly discharged in the axial direction, it can be blown to the outdoor heat exchanger, therefore, it is possible to cool the heat. The cooling surface of the exchanger is evenly supplied with air. Also, the same effect as that of the above-mentioned embodiment can be obtained by using the splash ring 18c.

Each component of the centrifugal blower described above will be described below, taking the centrifugal blower shown in FIG. 1 as an example.

The centrifugal blower shown in Embodiments 1-4 is constituted as follows: the blade outer diameter D ₂ H on the hub side is less than 85% of the blade outer diameter D ₂ on the shroud side, and the blade inner diameter D on the shroud side ₁ S is greater than 75% of the blade outer diameter _D2 on the shroud side, the blade outlet width _b2 is greater than 25% of the hub outer diameter _D2 , and the blade inner diameter _D1 H on the hub side is less than ₇₅ % of the blade outer diameter D2 .

According to the centrifugal blower of this embodiment, compared with the existing centrifugal blower with the same air volume as a benchmark, the effect is: the power consumption necessary to make it work can be saved by 8%, and the noise generated related to its work can also be reduced. Reduced by 1.5dB.

Next, another embodiment will be described using FIG. 28 . In the centrifugal blower 18 shown in Embodiments 1-5, the width _b2 of the blade outlet is greater than 30% of the outer diameter _D2 of the blade, or the inner diameter _D1H of the blade on the side of the hub is less than 50% of the outer diameter _D2 of the blade In the case of , the sub-blades 18h are arranged between the blades 18d. A plurality of sub-blades 500 arranged on the hub 18f are connected to the shroud 18a and the hub 18f. Alternatively, there is a structure that is connected to the shroud and has a sub-blade end surface at a suitable position between the shroud 18a and the hub 18f. The relationship between the inner diameter D ₁ W of the sub-blade 500 and the blade inner diameter D ₁ H on the hub side is D ₁ W > D ₁ H .

Usually, to achieve high air volume, either increase the inner diameter D ₁ S of the shield, or increase the outlet width of the blower, or both methods are used at the same time, but at this time, the method of increasing the number of blades is generally not used. On the contrary, it faces problems such as the pressure drop of the blower and the decrease of the air volume. However, if only adding blades of the same shape, the inflow area on the inlet side of the blades decreases due to the thickness of the blades, and in order to increase the speed, it may not be possible to achieve the expected high air volume. If the number of blades near the outlet is increased without reducing the area near the inlet of the blades, a predictable increase in air volume can be obtained. Therefore, a sub-blade 500 as shown in FIG. 28 is provided. The installation of the sub-blades 500 has the effect of increasing the air volume by about 5% at the same noise level.

Although the above embodiment has been described using an integrated air conditioner, it is not limited to an air conditioner, and the centrifugal blower of this embodiment can also be used as a blower used in other fields such as cooling and ventilation. For example, it is suitable for a centrifugal blower in equipment such as an air conditioner, a ventilating fan, a blower, and a vehicle cooler (engine, air conditioner). In addition, the centrifugal blower having the shape except the annular ring (splash ring 18c) of the above-mentioned centrifugal blower can also be applied to an indoor fan of an integrated air conditioner, a radiator fan for vehicle engine cooling, and the like.

As described above, according to this embodiment, the following effects can be expected.

The above-mentioned outdoor fan is arranged on the indoor side of the above-mentioned outdoor heat exchanger, and the diameter of the air suction port in the axial direction of the fan is made smaller than the diameter of the fan, and the outdoor fan is made into the above-mentioned fan. The lower part of the fan room surrounding the fan is provided with a water storage part for storing condensed water from the water guide passage, and the air sucked in by the surrounding of the above-mentioned components is discharged from the above-mentioned outdoor heat exchanger through the above-mentioned outdoor fan, so that the outdoor While the efficiency of the heat exchanger is improved, condensed water is prevented from being scattered from the air intake port of the integrated air conditioner to the outside of the integrated air conditioner.

The above-mentioned outdoor fan is arranged on the indoor side of the above-mentioned outdoor heat exchanger, the diameter of the air suction port in the axial direction of the fan is made smaller than the diameter of the fan, and the outdoor fan is made into the above-mentioned fan, In the lower part of the fan chamber surrounding the fan, a water storage part for storing condensed water from the water guide passage is provided, and the air sucked in by the surrounding of the above-mentioned components is discharged from the above-mentioned outdoor heat exchanger through the above-mentioned outdoor fan, and the The lower portion of the above-mentioned dew container is equipped with an electrical box with an operating part, and the vertical blade and the horizontal blade at the indoor air outlet are defined as being driven by a motor, and a space for disposing the motor, etc. can be provided at the indoor air outlet.

According to the present invention as described above, it is possible to provide an integrated air conditioner that prevents water from splashing outside.

Also, according to the present invention, it is possible to provide an integrated air conditioner that ensures a degree of freedom in the height dimension of the indoor air discharge port.

Claims (2)

1. An integrated air conditioner, equipped with: an assembly containing a compressor, an outdoor heat exchanger, an indoor fan, and an outdoor fan; a dew container for storing condensed water provided at the lower part of the above indoor heat exchanger; and Introduce the water in the above-mentioned dew container into the water guide passage at the bottom of the above-mentioned outdoor fan; it is characterized in that: the indoor side of the above-mentioned outdoor heat exchanger is equipped with the above-mentioned outdoor fan, and the diameter of the air suction port in the axial direction of the fan is compared to The diameter of the fan is smaller, and the outdoor fan is made into the above-mentioned fan, and a water storage part for storing condensed water from the above-mentioned water guide passage is arranged at the lower part of the fan room surrounding the fan, and the above-mentioned The air sucked in around the components is exhausted from the above mentioned outdoor heat exchanger. 2. The integrated air conditioner according to claim 1, wherein an electrical box provided with an operation unit is disposed under the dew container.

Images